David Eager
YOU?
Author Swipe
Risky Outdoor Play and Adventure Education in Nature for Child and Adolescent Wellbeing: A Scoping Review Open
According to the Australasian Society for Developmental Paediatrics, experiential learning and outdoor play contain elements of risk, bravery, uncertainty, exploration, personal challenge, and adventure. These attributes are fundamental to…
Geometry of an English Church Bell Open
The axisymmetric geometries of both internal and external profiles of church bells, along with the properties of the bell metal, are of vital importance to their acoustics. The role of “golden geometry” in determining the visual characteri…
Risky Play Is Not a Dirty Word: A Tool to Measure Benefit–Risk in Outdoor Playgrounds and Educational Settings Open
Challenge, adventure, and risky play have repeatedly been found to be learning environments that positively shape childhood well-being and development. Extant evidence-based research conveys the physical, cognitive, and socio-emotional gro…
Benefit–Risk Assessment in Sport and Recreation: Historical Development and Review of AS ISO 4980:2023 Open
Risk management involves thinking about what could happen if someone is exposed to a hazard and the likelihood of this event. The vast majority of standards relating to risk management were written in the context of Occupational Health and…
Quadruped Rotary Galloping Gait Pattern within a Constant Radius Bend Using Accelerometry Open
This paper provides an initial investigation of quadruped rotary galloping gait patterns using data from racing greyhounds as they navigate their way around a constant radius bend. This study reviewed actual race data collected over a five…
Playground injury prevention: the need for consistent and national implementation of Australian safety standards Open
Without a national approach to adequately resource and monitor playground injury, it is not possible to assess the impact of Australian Standards or any injury prevention program.
A Public Health Review into Two Decades of Domestic Trampoline Injuries in Children within Queensland, Australia Open
Trampolining as an activity brings enjoyment and many health benefits, but at the same time it carries an injury risk. Most domestic trampoline users are children who are developing in skill, cognition, risk perception, physical strength a…
Research on Impact Attenuation Characteristics of Greyhound Racing Track Padding for Injury Prevention Open
To reduce injuries to greyhounds caused by collisions with fixed racing track objects such as the outside fence or the catching pen structures, padding systems are widely adopted. However, there are currently neither recognised standards n…
Investigating the Knuckleball Effect in Soccer Using a Smart Ball and Training Machine Open
The term knuckleball in sporting jargon is used to describe a ball that has been launched with minimal spin, resulting in a trajectory that is erratic and unpredictable. This phenomenon was first observed in baseball (where the term origin…
Investigation into the Trampoline Dynamic Characteristics and Analysis of Double Bounce Vibrations Open
Double bounce is an unusual and potentially very hazardous phenomenon that most trampoline users may have experienced, yet few would have really understood how and why it occurs. This paper provides an in-depth investigation into the doubl…
Neck Loads During Head-First Entries into Trampoline Dismount Foam Pits: Considerations for Trampoline Park Safety Open
Serious cervical spine injuries have been documented from falls into foam pits at trampoline parks. To address the lack of evidence on how foam pits should be designed for mitigating neck injury risk, this study aimed to quantify neck load…
A Measurement of ‘Walking-the-Wall’ Dynamics: An Observational Study Using Accelerometry and Sensors to Quantify Risk Associated with Vertical Wall Impact Attenuation in Trampoline Parks Open
This study illustrates the application of a tri-axial accelerometer and gyroscope sensor device on a trampolinist performing the walking-the-wall manoeuvre on a high-performance trampoline to determine the performer dynamic conditions. Thi…
Greyhound Racing Track Lure Systems—Acoustical Measurements within and Adjacent to the Starting Boxes Open
This study investigates and compares the acoustic signatures of a traditional wire-cable-pulled lure system and two alternative battery-operated lure systems jointly developed by Covey Associates Pty. Ltd. and Steriline Pty. Ltd. to elimin…
Additional Criteria for Playground Impact Attenuating Sand Open
Falls within children’s playgrounds result in long bone and serious injuries. To lower the likelihood and severity of injury, impact attenuating surfaces (IAS) are installed within the impact area (fall zone). There are three primary IAS m…
Analysis of Racing Greyhound Path Following Dynamics Using a Tracking System Open
The University of Technology Sydney (UTS) has been working closely with the Australasian greyhound industry for more than 5 years to reduce greyhound race-related injuries. During this period, UTS has developed and deployed several differe…
Evaluating Martial Arts Punching Kinematics Using a Vision and Inertial Sensing System Open
Martial arts has many benefits not only in self-defence, but also in improving physical fitness and mental well-being. In our research we focused on analyzing the velocity, impulse, momentum and impact force of the Taekwondo sine-wave punc…
Dynamic Behaviour of High Performance of Sand Surfaces Used in the Sports Industry Open
The sand surface is considered a critical injury and performance contributing factor in different sports, from beach volleyball to greyhound racing. However, there is still a significant gap in understanding the dynamic behaviour of sport …
View article: Jerk within the Context of Science and Engineering—A Systematic Review
Jerk within the Context of Science and Engineering—A Systematic Review Open
Rapid changes in forces and the resulting changes in acceleration, jerk and higher order derivatives can have undesired consequences beyond the effect of the forces themselves. Jerk can cause injuries in humans and racing animals and induc…
View article: Velocity, acceleration, jerk, snap and vibration: forces in our bodies during a roller coaster ride
Velocity, acceleration, jerk, snap and vibration: forces in our bodies during a roller coaster ride Open
Changing acceleration and forces are part of the excitement of a roller coaster ride. According to Newton’s second law, , every part of our body must be exposed to a force to accelerate. Since our bodies are not symmetric, the direc…
View article: Greyhound racing ideal trajectory path generation for straight to bend based on jerk rate minimization
Greyhound racing ideal trajectory path generation for straight to bend based on jerk rate minimization Open
This paper presents methods for modelling and designing an ideal path trajectory between straight and bend track path segments for racing greyhounds. To do this, we numerically generate clothoid and algebraic curve segments for racing quad…
Analysis of Agile Canine Gait Characteristics Using Accelerometry Open
The high rate of severe injuries associated with racing greyhounds poses a significant problem for both animal welfare and the racing industry. Using accelerometry to develop a better understanding of the complex gait of these agile canine…
View article: Simulation of Racing Greyhound Kinematics
Simulation of Racing Greyhound Kinematics Open
Copyright © 2019 by SCITEPRESS – Science and Technology Publications, Lda. All rights reserved. This paper outlines greyhound dynamics results for yaw rate, speed, and the congestion pattern during a race derived through numerical modellin…